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#!/bin/sh # # kpartx_id # # Generates ID information for device-mapper tables. # # Copyright (C) 2006 SUSE Linux Products GmbH # Author: # Hannes Reinecke <hare@suse.de> # # # This program is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation version 2 of the License. # # This script generates ID information used to generate persistent symlinks. # It relies on the UUID strings generated by the various programs; the name # of the tables are of no consequence. # # Please note that dmraid does not provide the UUIDs (yet); a patch has been # sent upstream but has not been accepted yet. # DMSETUP=/sbin/dmsetup MAJOR=$1 MINOR=$2 UUID=$3 if [ -z "$MAJOR" -o -z "$MINOR" ]; then echo "usage: $0 major minor" exit 1; fi # Device-mapper not installed; not an error if [ ! -x $DMSETUP ] ; then exit 0 fi # Table UUIDs are always '<type>-<uuid>'. dmuuid=${UUID#*-} dmtbl=${UUID%%-*} dmpart=${dmtbl#part} dmserial= # kpartx types are 'part<num>' if [ "$dmpart" = "$dmtbl" ] ; then dmpart= else dmtbl=part fi # Set the name of the table. We're only interested in dmraid, # multipath, and kpartx tables; everything else is ignored. if [ "$dmtbl" = "part" ] ; then dmname=$($DMSETUP info -c --noheadings -o name -u $dmuuid) echo "DM_MPATH=$dmname" # We need the dependencies of the parent table to figure out # the type if the parent is a multipath table case "$dmuuid" in mpath-*) dmdeps=$($DMSETUP deps -u $dmuuid) dmserial=${dmuuid#mpath-} ;; esac elif [ "$dmtbl" = "mpath" ] ; then dmname="$dmuuid" dmserial="$dmuuid" # We need the dependencies of the table to figure out the type dmdeps=$($DMSETUP deps -u $UUID) fi [ -n "$dmpart" ] && echo "DM_PART=$dmpart" # Figure out the type of the map. For non-multipath maps it's # always 'raid'. if [ -n "$dmdeps" ] ; then case "$dmdeps" in *\(94,*) echo "DM_TYPE=ccw" ;; *\(104,* | *\(105,* | *\(106,* | *\(107,* | *\(108,* | *\(109,* | *\(110,* | *\(112,*) echo "DM_TYPE=cciss" ;; *\(9*) echo "DM_TYPE=raid" ;; *) echo "DM_TYPE=scsi" echo "DM_WWN=0x${dmserial#?}" ;; esac else echo "DM_TYPE=raid" fi if [[ $dmserial ]]; then echo "DM_SERIAL=$dmserial" fi exit 0